Spyder Arctic Laser is the world's most powerful laser you can legally own. It's got a cool-blue, but blazing-hot, laser beam. This company also makes a flashlight so bright, it can cook an egg and set things on fire.
Military grade burning lasers are only the size of a pen but can cut like a knife, light things on fire, and have their beam be visible any where you point it; hundreds of miles away. But knowing me I'd mistake it as a laser pointer.